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On Tuesday morning inhabitants of the planet's dirtiest urban center found themselves inhaling severely hazardous air that was classified as the "critical" category.

Alarming Air Quality Measurements

Multiple areas of the city recorded an AQI exceeding 500, which translates to 10x the healthy level set by the World Health Organization.

Particular areas, levels of toxic particulate matter soared to of 1800, equating to 15-20x higher than acceptable standards.

Pyrotechnics Ban and Current Developments

Beginning in 2020, authorities had maintained a comprehensive restriction on the distribution and bursting of firecrackers during the Festival of Lights due to their major role to the dangerous haze that blankets the capital as the cold season sets in.

Nevertheless recently, the newly elected local administration approached the supreme court to request a easing of the prohibition.

They proposed allowing "environmentally conscious pyrotechnics" – historically questioned by environmentalists as being only about 30% less polluting – as a compromise between "heritage and environment".

Judicial Verdict and Reality

Despite concerns of medical and ecological advocates, judges agreed to the appeal, mandating that green firecrackers could be set off during limited hours throughout the celebrations.

Throughout the festival evening, there was widespread disregard of the designated hours across the city, with insufficient enforcement regarding whether the firecrackers being used were actually the more environmentally friendly type.

Numerous air quality sensors throughout Delhi recorded contamination reaching highest levels around the night hours to the most severe readings recorded during celebrations in at least three years.

Regional Implications

The proliferation of fireworks during the celebrations also initiated a blame game with neighbouring the neighboring country, with authorities in Pakistan's Punjab partially attributing worsening atmospheric conditions in their urban centers on hazardous particles coming from across the border following the events.

Chronic Pollution Crisis

The dangerously high levels of atmospheric toxins in the city have continued as a serious issue for over a decade and a half, with the problem showing no improvement.

Near celebratory seasons, the concentration of hazardous particulate matter in the atmosphere has been found to spike to significantly exceeding the most severe records ever recorded in Beijing, which was once regarded as the world's most polluted metropolis.

Diverse Pollution Contributors

This crisis in the city is caused by a combination of multiple factors including heavy vehicle emissions, airborne particles, building projects, garbage fires and smoke from agricultural fires in adjacent areas of neighboring agricultural zones.

Throughout these areas, agricultural workers illegally ignite agricultural waste to prepare for next season, creating hazardous smog that then gets trapped over the capital as cooler air sets in.

Medical and Financial Impact

Public health and economic toll on the nearly 33 million people living in the metropolitan zone is substantial, according to various investigations.

This pollution causes increased incidence of neurological, heart and circulatory and respiratory disorders, and can result in malignancies.

Air quality crisis is estimated to be causing ten thousand premature mortalities annually in Delhi.